Francesinha Prego is a variation of the traditional Francesinha sandwich. It is made with tender beef steak, ham, linguiça, and melted cheese, all sandwiched between slices of bread. The sandwich is then grilled until the cheese is melted and gooey. It is often served with a fried egg on top and a side of fries. The Francesinha Prego is a meat lover's delight and a must-try when visiting Porto.